Science Inventory

Next >>

This work will involve a presentation to the Tampa Bay Stormwater Management Public Education and Training Committee on the U.S. EPA's National Stormwater Calculator(SWC). This presentation will focus on describing the conceptual model underpinning SWC, capabilities of the calcul...

Presenting a brief introduction to EPA's National Stormwater Calculator at the EWRI Congress

This is a presentation on how homeowners or developers can use EPA's National Stormwater Calculator for LEED v4 documentation for credits and also to help design their green infrastructure low-impact development controls. 

Models, tools, BMPs that combine GI and gray infrastructure, and associated costs/benefits for eliminating urban CSOs.   

EPA’s National Stormwater Calculator (SWC) is a software application tool that estimates the annual amount of rainwater and frequency of runoff from a specific site using green infrastructure as low impact development controls. The SWC is designed for use by anyone interested in ...

The  U.S. EPA National Stormwater Calculator (SWC) is a screening level modeling tool for planning of green infrastructure and low impact development (LID) stormwater management controls and projects throughout the U.S. The SWC provides stormwater runoff reduction and costs ...

Estimating the costs of green infrastructure (GI) and low impact development (LID) stormwater management controls is an important issue for many municipalities and water utilities in the United States of America. The National Stormwater Calculator (NSWC) is a site-level scale pla...

Overview summary of existing extreme weather data used in the National Stormwater Calculator (SWC); and planned research underway to update the extreme weather data in the SWC. Presenting to the EPA Chesapeake Bay Program and the stormwater and climate resilience workgroups in or...

NOAA and its partners at the Northeast Regional Climate Center are hosting a virtual workshop for small- to medium-sized water utilities and stormwater managers serving 100,000 or less. The focus of the workshop is on “Climate & Weather Information for Water Utilities &...

Annual precipitation, extreme rainfall events, and flooding have increased in the Great Lakes region during the last century, and these trends are expected to continue. These changes are already causing significant impacts for communities across the region. Many older stormwater...

The U.S. Environmental Protection Agency National Stormwater Calculator (NSWC) simplifies the task of estimating runoff through a straightforward simulation process based on the EPA Stormwater Management Model. The NSWC accesses localized climate and soil hydrology data, and opti...

Urban communities use hydrologic models to plan for and assess the effectiveness of stormwater control measures. Although emphasis is placed on soils as permeable surfaces that regulate the rainfall-runoff process, representative soil hydrologic parameters for urban areas are rar...

Decision makers at all levels of government face challenges in protecting human health and the environment – in particular, gaining access to the latest scientific findings that can bolster the foundation of those decisions. EPA’s Office of Research and Development (O...

The National Stormwater Calculator (SWC) is a software application that estimates the annual amount of rainwater and frequency of runoff from a specific site. Estimates are based on local soil conditions, land cover, and historic rainfall records. Users supply information about t...

Decision makers at all levels of government face challenges in protecting human health and the environment – in particular, gaining access to the latest scientific findings that can bolster the foundation of those decisions. EPA’s Office of Research and Development (O...

Stormwater discharges continue to cause impairment of our Nation’s waterbodies. In order to reduce impairment, EPA has developed the National Stormwater Calculator (SWC) to help support local, state, and national stormwater management objectives and regulatory efforts to re...

Green infrastructure (GI) represents a broad set of stormwater control measures practices that can be flexibly implemented to increase sewershed retention capacity, and can thereby improve on the management of water quantity and quality. Although much GI presents as formal engine...

Stormwater discharges continue to cause impairment of our Nation’s waterbodies. In order to reduce impairment, EPA has developed the National Stormwater Calculator (SWC) to help support local, state and national stormwater management objectives and regulatory efforts to red...

Stormwater discharges continue to cause impairment of our Nation’s waterbodies. In order to reduce impairment, EPA has developed the National Stormwater Calculator (SWC) to help support local, state, and national stormwater management objectives and regulatory efforts to re...

Stormwater discharges continue to cause impairment of our Nation’s waterbodies. In order to reduce impairment, EPA has developed the National Stormwater Calculator (SWC) to help support local, state, and national stormwater management objectives and regulatory efforts to re...

93% of CSO Permittees have enforceable long-term CSO control plan in place as of today. Most of them are implementing and few have finished the implementation of their CSO control plans. We are seeing challenges for both cases as follow. 1. Finished implementation of their lon...

Researchers in EPA’s Office of Research and Development (ORD) have been studying green infrastructure practices and developing models and tools to help communities manage their stormwater runoff and address nutrient impairment. This webinar will present a toolkit consisting of fi...

National Stormwater Calculator. EPA developed the National Stormwater Calculator (SWC) to help support local, state, and national stormwater management objectives and regulatory efforts to reduce runoff through infiltration and retention using green infrastructure practices as lo...

SSWR Webinar Series

Stormwater discharges continue to cause impairment of our Nation’s waterbodies. In order to reduce impairment, EPA has developed the National Stormwater Calculator (SWC) to help support local, state, and national stormwater management objectives and regulatory efforts to reduc...